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DE2903915A1 - Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened - Google Patents

Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened

Info

Publication number
DE2903915A1
DE2903915A1 DE19792903915 DE2903915A DE2903915A1 DE 2903915 A1 DE2903915 A1 DE 2903915A1 DE 19792903915 DE19792903915 DE 19792903915 DE 2903915 A DE2903915 A DE 2903915A DE 2903915 A1 DE2903915 A1 DE 2903915A1
Authority
DE
Germany
Prior art keywords
bar
guide bush
jaw pieces
automatic lathe
tightened
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19792903915
Other languages
German (de)
Inventor
Hans Jens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19792903915 priority Critical patent/DE2903915A1/en
Publication of DE2903915A1 publication Critical patent/DE2903915A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/202—Details of the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
    • B23B13/12—Accessories, e.g. stops, grippers
    • B23B13/126—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/33—Elastomers, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/20—Collet chucks
    • B23B2231/201—Operating surfaces of collets, i.e. the surface of the collet acted on by the operating means
    • B23B2231/2021—Operating surfaces of collets, i.e. the surface of the collet acted on by the operating means comprising two different cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

A guide bush, for supporting bar material as it is being turned in an automatic lathe, has an inner sleeve with three longitudinal slots extending from one end. This inner sleeve fits inside a second sleeve and traps three sliding jaw pieces in the longitudinal slots. The ends of the jaw pieces are chamfered so that when the inner sleeve is screwed axially inwards by a clamping nut, the jaw pieces are forced radially inwards to clamp the bar material. The guide bush is able to suit a wide range of bar dias.

Description

Beschreibung meiner Erfindung:Description of my invention:

Bischer wurden bei Langdrchautomaten folgende Führungsbuchsen verwendet: 1. Feste Führungsbuchsen, die auf einen gleichbleibenden Stangendurchmesser einstellbar waren.The following guide bushes have been used in automatic sliding machines: 1. Fixed guide bushes that can be adjusted to a constant rod diameter was.

Nachteile dieser festen Führungsbucsen: Durch die Notwendigkeit,das zu bearbeitende Werkstück ohne Spiel lasern zu müssen, fraß sich das werkstück häufig fest, so ua nur vorbehandelte (z, B. vofgeschliffene) Stücke bearbeitet werde konnten. Die Materialien mußten zudem weicher als die Führungsbuchse sein. Eine gleichbleibende Fertigungsqualität konnte nur durch ständige Kontrolle annähern@erreicht werden. Disadvantages of these fixed guide bushes: Due to the need to Workpiece to be machined without having to laser-cut the workpiece frequently fixed, so among other things only pretreated (e.g. pre-ground) pieces could be processed. The materials also had to be softer than the guide bush. A consistent one Manufacturing quality could only be approximated by constant control.

2. Mitlaufende Rollenführung@buchsen Pa harte Materialien wie V2 A / Stahl, Silberstahl usw. 2. Revolving roller guide @ bushes Pa hard materials such as V2 A / steel, silver steel, etc.

nicht mit fester Führungsbuchsen bearbeitbar waren, wurden mitlaufende Rollenführungsbuchsen erforderlich. were not machinable with fixed guide bushes, were concurrent Roller guide bushes required.

Nachteile der mitlaufenden Rollenführungsbuchsen: Sie unterliegen in der Praxis einem @roßen Verschleiß, da die Last nur eine Punktauflagerung hat. Durch den Verschleiß ist eine jederzeitige Fertigungsqualität in Bezug auf Maßhaltigkeit und Oberflächengüte nicht gewährleistet. Außerdem ist dieses Verfahren ziemlich stbranfällig. Es verlangt mit diesem Verfahren vertraute Arbetskräfte. Zudem ist es sehr kostspielig. Disadvantages of the rotating roller guide bushes: They are subject to in practice a great amount of wear and tear, since the load has only one point support. Due to the wear and tear, there is a constant production quality in terms of dimensional accuracy and surface quality not guaranteed. Also, this procedure is pretty vulnerable. It requires workers who are familiar with this procedure. In addition, is it is very costly.

Die Verarbeitung von Profilmaterial ist bei der Rollenführungs buchse nur durch zusätzliche Führungsstanden möglich. Gewalztes Material (DIN 1013) und unrunde Xunststoffe ließen sich im Langdrehverfahren bisher überhaupt nicht bearbeiten Sie verlangten die Bearbeitung in herkömmlicher Weise und Pbr oder Vorbehandlung. The processing of profile material is in the case of the roller guide bush only possible with additional management positions. Rolled material (DIN 1013) and Up to now, non-round plastics could not be machined at all using the long turning process They required processing in the conventional manner and Pbr or pretreatment.

Ich habe nun nachstehendes Verfahren für eine problemlose Bearbeitung auch von gewalztem oder unvorbehandeltem Material entwickelt, das sich auch bereits in der Praxis über einen längeren Zeitraum bewahrt hat.I now have the following procedure for trouble-free editing also developed from rolled or untreated material that is also already has retained in practice over a longer period of time.

Ich habe das Verfahren der mitlaufenden Führungsbuchse unter Verwendung von Spannzanen, die sich durch einetellbare Vorspannung mittels Federdruck auf veränderliche Materialdurchnesser einstellen lassen, entwickelt.I've been using the idler guide bushing method of clamping jaws, which can be adjusted to variable preload by means of spring pressure Let the material diameter adjust, developed.

Der Anpreßdruck auf das durch die Spannzangen hindurchgleitende Material verändert sich hierbei nicht. Hierdurch wird der Langdrehautomat erstmalig fr alle Materialien verwendbar.The contact pressure on the material sliding through the collets does not change here. This means that the Swiss-type lathe will be available to everyone for the first time Materials usable.

Durch Verwendung von Profilzangen läßt sich nunmehr ohne weitere Ver änderungen an der Führungsbuchse auch Profilmaterial bearbeiten.By using profile pliers you can now without further ver Changes to the guide bushing also process the profile material.

Eine gleichbleibende Fertigungsqualität ist durch die nahezu verschleißfreie Wirkungsweise der mitlaufenden Führungsbuchse gegeben. Dieses Ergebnis ist durch die Verwendung von Spannzangen jetzt möglich.A constant manufacturing quality is due to the almost wear-free The operating principle of the guiding bushing is given. This result is through the use of collets is now possible.

Im übrigen verweise ich auf die beigefügte Zeichnung.For the rest, I refer to the attached drawing.

L e e r s e i t eL e r s e i t e

Claims (1)

Patentanspruch: kein eatentanspruch beinhaltet das Verfahren der mitlaufenden Führungsbuchse unter Verwendung von Spannzangen, die sich durch einstellbare Vorspannung mittels Federdruck automatisch auf sich innerhalb der Verarbeitung einer Materialstange verändernde Materialdurchmesser einstellen. Patent claim: no claim to eat includes the process of revolving guide bush using collets, which are adjustable through Preload by means of spring pressure automatically on itself within the processing of a Set the material bar to change the material diameter. Der mpreßdruck auf das durch die Spannzangen hindurchgleitende Iaterial verWndert sich hierbei nicht.The compression pressure on the material sliding through the collets does not change here. Die Spannzangen spannen das Material durch voneinander getrennte Spannsegmente auf ihrer gesamten Länge parallel.The collets clamp the material using separate clamping segments parallel along its entire length. Hierdurch wird der Langdrehautomat erstmalig problemlso für alle Stangenmaterialien verwendbar.As a result, the sliding head lathe becomes problem-free for all bar materials for the first time usable.
DE19792903915 1979-02-02 1979-02-02 Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened Withdrawn DE2903915A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792903915 DE2903915A1 (en) 1979-02-02 1979-02-02 Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792903915 DE2903915A1 (en) 1979-02-02 1979-02-02 Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened

Publications (1)

Publication Number Publication Date
DE2903915A1 true DE2903915A1 (en) 1980-08-14

Family

ID=6061967

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792903915 Withdrawn DE2903915A1 (en) 1979-02-02 1979-02-02 Guide bush for bar in automatic lathe - has three jaw pieces which clamp bar when adjusting nut is tightened

Country Status (1)

Country Link
DE (1) DE2903915A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517576A1 (en) * 1981-12-05 1983-06-10 Jens Hans
FR2817181A1 (en) * 2000-09-29 2002-05-31 Valeo Equip Electr Moteur Device for clamping bar which is to be machined comprises two clamping jaws which come into contact with bar, axial elastic rods are interposed circumferentially between jaws adjacent surfaces
DE102005024840B3 (en) * 2005-05-27 2007-01-18 Szm Spannwerkzeuge Gmbh Collet and clamping device for a lathe
CN102216006A (en) * 2008-10-15 2011-10-12 丹尼尔·丁纳 Flexible guide bushes for machine tools

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517576A1 (en) * 1981-12-05 1983-06-10 Jens Hans
FR2817181A1 (en) * 2000-09-29 2002-05-31 Valeo Equip Electr Moteur Device for clamping bar which is to be machined comprises two clamping jaws which come into contact with bar, axial elastic rods are interposed circumferentially between jaws adjacent surfaces
DE102005024840B3 (en) * 2005-05-27 2007-01-18 Szm Spannwerkzeuge Gmbh Collet and clamping device for a lathe
CN102216006A (en) * 2008-10-15 2011-10-12 丹尼尔·丁纳 Flexible guide bushes for machine tools
CN102216006B (en) * 2008-10-15 2015-09-23 丹尼尔·丁纳 Flexible guide bushes for machine tools

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8130 Withdrawal